working on Lego Technic; Recovery truck.
Reached Step 27(book 1)....fixing the rope spool. and found that the white gear wheel is not fitting in. i.e., i have the white gear fixed on the shaft with ...

My daughter got the LEGO Technic - Service Truck set. When we looked at the instructions, we saw a different notation on parts.
eg: the beams (cross beam) it has number 5 in white circle. what does ...

I need a mechanism so that if a (NXT) motor rotates forward, it moves one gear, but the other stays still, but if it rotates backward, the first gear does not move, but the second one does.
I found ...

My aim is to make the robot communicate using protocol 802.15.4 through a USB dongle 802.15.4 over 6LoWPAN.
The robot has to be able to get information from TelosB.
I wonder whether this possibility ...

Are there any common patterns for making a 6x6 (or bigger) LEGO board have a ability to rotate using technic with gears and such? Has to be without the help of the existing 2x2 lego part that rotates, ...

Sets 42010 and 42011 feature a pull-back motor. They have a very high torque for a very small numbers of turns, they then free-wheel.
I'm trying to find alternate usage for them. That is anything but ...

I am using Lego in the classroom to introduce students to geared machines.
As part of this I am asking them to design a winch, using a small 1.5V DC motor and a collection of the common Lego gears, ...

I want to build a small car that is about 200 grams. I want it to run the following course and stop at exactly or about the the finish line. I can't use any controlling devices or electronics.
I've ...

Can I buy Technic sets that are just assortments of parts as opposed to a specific vehicle?
Background
I do research on sediment carbon cycling in lakes and I need use a rotating array of magnets to ...

I'm not sure of the name of the pattern, feel free to edit title if you have a better name for the pattern commonly used in engines. I was just wondering if anyone has built this specific pattern in ...

I am making a small robot with an Arduino and Technic LEGO powered by stepper motors. I am planning on moving small rocks throughout my machine. Does anyone have an idea of what kind of Technic LEGO ...